CN111856055A - Feeding mechanism - Google Patents
Feeding mechanism Download PDFInfo
- Publication number
- CN111856055A CN111856055A CN202010732155.XA CN202010732155A CN111856055A CN 111856055 A CN111856055 A CN 111856055A CN 202010732155 A CN202010732155 A CN 202010732155A CN 111856055 A CN111856055 A CN 111856055A
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- Prior art keywords
- sample
- slot
- valve rod
- groove
- valve body
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- 230000007246 mechanism Effects 0.000 title claims abstract description 26
- 238000010926 purge Methods 0.000 claims abstract description 47
- 238000007789 sealing Methods 0.000 claims description 9
- 239000000567 combustion gas Substances 0.000 claims 1
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 6
- 238000002347 injection Methods 0.000 abstract description 4
- 239000007924 injection Substances 0.000 abstract description 4
- 238000007664 blowing Methods 0.000 abstract 3
- 238000005070 sampling Methods 0.000 abstract 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002000 scavenging effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010408 sweeping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/10—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices
- G01N35/1081—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices characterised by the means for relatively moving the transfer device and the containers in an horizontal plane
- G01N35/1083—Devices for transferring samples or any liquids to, in, or from, the analysis apparatus, e.g. suction devices, injection devices characterised by the means for relatively moving the transfer device and the containers in an horizontal plane with one horizontal degree of freedom
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/025—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations having a carousel or turntable for reaction cells or cuvettes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N35/00—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor
- G01N35/02—Automatic analysis not limited to methods or materials provided for in any single one of groups G01N1/00 - G01N33/00; Handling materials therefor using a plurality of sample containers moved by a conveyor system past one or more treatment or analysis stations
- G01N35/04—Details of the conveyor system
- G01N2035/0439—Rotary sample carriers, i.e. carousels
- G01N2035/0441—Rotary sample carriers, i.e. carousels for samples
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The invention discloses a feeding mechanism, which comprises a sample conveying disc which rotates under the drive of a motor, wherein a plurality of sample holes are formed in the circumference of the sample conveying disc, a purging device is arranged on the lower side of the circumference of the sample conveying disc, the purging device comprises a valve body and a valve rod which can move in the valve body, a sample containing groove is formed in the valve rod, and the valve body is sequentially provided with a first groove position, a sixth groove position and a fourth groove position, wherein the first groove position is used for enabling the valve rod to realize sample injection at a sample injection position, the sixth groove position is used for enabling the valve rod to realize sample purging at a purging position, and the fourth groove position is used for enabling the valve rod to realize sample falling at a sample falling position. The blowing device of the feeding mechanism realizes the movement of the sample among the sampling position, the blowing position and the sample dropping position, realizes automatic sampling, zero blank blowing and automatic sample dropping, solves the problems of high noise, large fluctuation and easy sample clamping of the sample feeding disc, and also solves the problem that air interference particles enter the combustion chamber to pollute the reflecting environment.
Description
Technical Field
The invention relates to the technical field of conveying operation, in particular to a feeding mechanism.
Background
The sample feeding mechanism is commonly used for automatically feeding samples of laboratory elemental analysis instruments, and mainly realizes automatic sequential sample feeding of samples, purging of air brought by the samples and automatic falling of the samples into a combustion chamber.
The existing sample feeding mechanism is of a sliding block type structure, a sample feeding disc pushes a sliding block through an air cylinder, and a ratchet mechanism on the sliding block pushes a stop pin connected to the sample disc to realize indexing feeding of the sample disc; the sliding block loads the sample into the furnace door plug, then the sealing position is recovered, the sample is swept by the sweeping gas, the waste gas is exhausted through the combustion chamber, and finally the furnace door plug cylinder acts to release the sample to be decomposed in the combustion chamber. Has the following defects: firstly, the sample feeding disc is pushed by an air cylinder, so that the rigid collision noise is large, the fluctuation of the pressure of the power air is large, and the sample clamping is easy; secondly, there is no sealed purging volume, and when the sample falls after purging, air interference particles easily enter the combustion chamber along with the sample, thereby polluting the reaction environment.
Therefore, how to provide a feeding mechanism which solves the problems of the sample feeding disk, such as high noise, large fluctuation, easy sample clamping, and air interference particles entering the combustion chamber to pollute the reaction environment is a technical problem which needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a feeding mechanism.A purging device realizes the movement of a sample among a sample introduction position, a purging position and a sample falling position, realizes automatic sample introduction, zero blank purging and automatic sample falling, solves the problems of high noise, large fluctuation and easy sample clamping of a sample feeding disc, and also solves the problem that air interference particles enter a combustion chamber to pollute the reaction environment.
In order to achieve the purpose, the invention provides a feeding mechanism, which comprises a sample feeding disc which is driven by a motor to rotate, wherein a plurality of sample holes are formed in the circumference of the sample feeding disc, a purging device is arranged on the lower side of the circumference of the sample feeding disc, the purging device comprises a valve body and a valve rod which can move in the valve body, a sample containing groove is formed in the valve rod, and the valve body is sequentially provided with a first groove position, a sixth groove position and a fourth groove position, wherein the first groove position is used for enabling the valve rod to realize sample feeding at a sample feeding position, the sixth groove position is used for enabling the valve rod to realize sample purging at a purging position, and the fourth groove position is used for enabling the valve rod to realize sample falling at a sample falling position.
Preferably, the purging device comprises a sample dropping cone arranged below the sample feeding disc, and the sample dropping cone is communicated with the first groove position.
Preferably, the sample dropping cone is wide at the top and narrow at the bottom, and the inner wall of the sample dropping cone is tapered from top to bottom.
Preferably, the valve body is provided with a second slot position located between the first slot position and the sixth slot position and/or a third slot position located between the sixth slot position and the fourth slot position and/or a fifth slot position located at one side of the fourth slot position far away from the first slot position, and the second slot position, the third slot position and the fifth slot position are used for installing a sealing ring.
Preferably, the valve comprises a linear slide rail which is connected with the valve rod and is used for driving the valve rod to do linear motion in the valve body.
Preferably, the valve body is provided with a first vent hole, a second vent hole and an air inlet groove which is communicated with the sixth groove position and is used for introducing scavenging air or combustion air.
Preferably, the sample holes comprise a plurality of first sample holes and a plurality of second sample holes which are arranged in a staggered manner, and the first sample holes and the second sample holes are respectively positioned on two concentric circles.
Compared with the prior art, the feeding mechanism provided by the invention comprises a motor, a sample feeding disc and a purging device, wherein the purging device is arranged at the lower side of the circumference of the sample feeding disc, the sample feeding disc is driven by the motor to rotate, a plurality of sample holes are formed in the circumference of the sample feeding disc, the purging device comprises a valve body and a valve rod, the valve rod can move in the valve body, the valve rod is provided with a volume groove, the valve body is sequentially provided with a first groove position, a sixth groove position and a fourth groove position, the first groove position is used for enabling the valve rod to realize sample injection at a sample injection position, the sixth groove position is used for enabling the valve rod to realize sample purging at a purging position, and the fourth groove position is used for enabling the valve rod to realize sample falling at a sample falling position; the feeding mechanism is driven by a motor to realize rotation of a sample conveying disc, a sample is conveyed into a purging device from the sample conveying disc through a sample hole, the sample is conveyed into the purging device to be accommodated through a volume groove, a valve rod moves in a valve body to realize that the valve rod moves to processing positions of three samples, the samples in the volume groove and the volume groove move to the processing positions of the three samples, the sample is conveyed into the volume groove through the valve rod, the samples in the volume groove are purged through the valve rod moving to a sixth groove, and the samples in the volume groove are dropped through the valve rod moving to a fourth groove; the feeding mechanism is driven by a motor to feed the sample plate, the purging device realizes that a sample moves among three positions of a sample feeding position, a purging position and a sample dropping position, realizes automatic sample feeding, zero blank purging and automatic sample dropping, solves the problems of high noise, large fluctuation and easy sample clamping of the sample feeding plate, and also solves the problem that air interference particles enter a combustion chamber to pollute the reaction environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a feeding mechanism provided in an embodiment of the present invention;
FIG. 2 is a schematic view of the configuration of the sample tray of FIG. 1;
fig. 3 is a schematic structural view of the purging device in fig. 1.
Wherein:
1-sample sending plate, 2-purging device, 1101-first sample hole, 1102-second sample hole, 2101-first vent hole, 2102-second vent hole, 22-sample falling cone, 23-valve body, 24-valve rod, 241-sample containing groove, 25-linear slide rail, 2601-first slot position, 2602-second slot position, 2603-third slot position, 2604-fourth slot position, 2605-fifth slot position, 2606-sixth slot position and 27-air inlet groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Referring to fig. 1 to fig. 3, in which fig. 1 is a schematic structural diagram of a feeding mechanism according to an embodiment of the present invention, fig. 2 is a schematic structural diagram of a sample tray in fig. 1, and fig. 3 is a schematic structural diagram of a purging device in fig. 1.
In a first specific embodiment, the feeding mechanism provided by the invention comprises a sample conveying disc 1 and a purging device 2, wherein the purging device 2 is arranged below the sample conveying disc 1, and a sample falls into the purging device 2 through the sample conveying disc 1; more specifically, a plurality of sample holes are formed along the circumference of the sample conveying disc 1, the purging device 2 is correspondingly arranged on the lower side of the circumference of the sample conveying disc 1, and the samples fall into the subsequent purging device 2 through the sample holes. Besides, the sample conveying disc 1 is driven by a motor, and the sample conveying disc 1 is driven by the motor to rotate; the purging device 2 is a slide valve structure, the purging device 2 includes a valve body 23 and a valve rod 24, the valve rod 24 is movable in the valve body 23, the valve rod 24 is provided with a sample containing groove 241, the valve body 23 is sequentially provided with a first groove 2601, a sixth groove 2606 and a fourth groove 2604, the three grooves respectively correspond to a sample introduction position where a sample is introduced, a purging position where the sample is purged and a sample falling position where the sample is fallen, when the valve rod 24 moves in the valve body 23, the sample containing groove 241 respectively moves to the first groove 2601, the sixth groove 2606 and the fourth groove 2604 to perform sample introduction, purging of the sample and sample falling.
In this embodiment, the motor drives the sample-feeding tray 1 to rotate, the sample falls into the purging device 2 below through the sample hole, at this time, the valve rod 24 moves to the sample-feeding position of the valve body 23, the sample-containing groove 241 is located at the first slot 2601, the first slot 2601 penetrates upward and faces the sample hole, and the sample directly falls into the sample-containing groove 241 through the sample hole to realize sample feeding; next, at this time, the valve rod 24 moves to the purging position of the valve body 23, the sample containing groove 241 is located at the sixth groove 2606, the sixth groove 2606 is communicated with the outside and can be filled with purging gas for circulation, and the sample in the sample containing groove 241 is purged under the action of the purging gas; next, at this time, the valve rod 24 moves to the sample dropping position of the valve body 23, the sample containing groove 241 is located at the fourth groove 2604, the fourth groove 2604 penetrates downward and faces the device in the subsequent step, and the sample in the sample containing groove 241 is subjected to the action of gravity to realize sample dropping.
This feeding mechanism is by motor drive sample dish 1, sweeps device 2 and realizes that the sample moves between advancing kind position, sweeping position and the three position of falling kind position, realizes autoinjection, zero blank sweeps and automatic falling kind, has solved the problem that sample dish 1 noise is big, undulant big and easy card appearance of sending, has still solved the problem that air interference particle gets into the combustion chamber and pollutes the reflection environment.
For better technical effect, the purging device 2 comprises a sample dropping cone 22 arranged below the sample conveying disc 1, the top end of the sample dropping cone 22 is open, the tail end of the sample dropping cone 22 is communicated with the first groove 2601, and the sample dropping cone 22 is used for better collecting samples, so that the samples can completely fall into the purging device 2.
Illustratively, the sample cone 22 is conical; more specifically, a cone; the sample-dropping cone 22 is wide at the top and narrow at the bottom, and the inner wall of the sample-dropping cone 22 is tapered from the top to the bottom, and has the largest cross section at the top end to facilitate the collection and the inflow of the samples at the top end and the smallest cross section at the tail end to facilitate the collection and the inflow of the samples at the tail end.
For better technical effect, three positions in the valve body 23 are isolated into three independent areas, and any two areas can be sealed and isolated through a sealing ring, so that the sealing performance among different areas is improved, in other words, the sealing isolation among the sample introduction position, the purging position and the sample falling position can be realized through the sealing ring, and the sealing ring can be assembled in an annular groove formed in the valve body 23; more specifically, the valve body 23 is provided with a second slot 2602 located between the first slot 2601 and the sixth slot 2606 and/or a third slot 2603 located between the sixth slot 2606 and the fourth slot 2604 and/or a fifth slot 2605 located on a side of the fourth slot 2604 away from the first slot 2601, wherein the second slot 2602, the third slot 2603 and the fifth slot 2605 are used for installing the sealing ring.
In a specific embodiment, the valve rod 24 can be moved in the valve body 23 by means of a linear slide 25; the linear slide rail 25 is connected with the valve rod 24, two ends of the linear slide rail 25 are fixedly connected with two ends of the valve rod 24 respectively, so that the valve rod 24 and the linear slide rail 25 keep synchronous motion, a linear portion of the linear slide rail 25 is provided with uniform teeth, and rotary power output by a motor and the like can be converted into linear motion power of the linear slide rail 25 in a gear meshing mode, so that the valve rod 24 is driven to do linear motion in the valve body 23.
Illustratively, the valve body 23 is provided with a first vent hole 2101, a second vent hole 2102 and an air inlet groove 27, the sixth groove 2606 of the air inlet groove 27 is communicated, and the air inlet groove 27 is used for introducing scavenging air or combustion air.
In a specific embodiment, the sample holes are arranged in two groups in a staggered manner; specifically, the sample plate comprises a plurality of first sample holes 1101 and a plurality of second sample holes 1102 which are arranged in an interlaced manner, the first sample holes 1101 and the second sample holes 1102 are respectively located on two concentric circles, the radius of the concentric circle where the first sample holes 1101 are located is larger than that of the concentric circle where the second sample holes 1102 are located, that is, two rows of staggered sample position holes, namely, 72 sample position holes, are formed in the sample plate 1, and the first sample holes 1101 are located outside the second sample holes 1102.
In this embodiment, the staggered manner means that the second sample holes 1102 are located between two adjacent first sample holes 1101, and the staggered arrangement is beneficial to reducing the distance between the sample feeding holes in a smaller space, and is beneficial to the next sample feeding of the sample, so that the conical sample feeding manner of the sample dropping cone 22 is more reliable.
When the samples are sent, the samples alternately fall into the subsequent purging device 2 through the sample holes, and more samples can be put into the limited space; the sample disc 1 is driven by the motor to rotate by the inner gear ring, the reduction ratio of 11:1 is realized, the rotating torque is increased, the step angle of the stepping motor is subdivided, and accurate sample introduction is realized.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The feeding mechanism provided by the present invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a feeding mechanism, its characterized in that includes and is rotary motion's sample dish (1) of sending under the drive of motor, follows the circumference of sending sample dish (1) is equipped with a plurality of sample holes, the circumference downside of sending sample dish (1) is equipped with sweeps device (2), sweep device (2) including valve body (23) and can in valve rod (24) of removal in valve body (23), valve rod (24) are equipped with and hold appearance groove (241), valve body (23) are equipped with in proper order and are used for supplying valve rod (24) realize in advance the first trench (2601) of appearance of sample, are used for supplying valve rod (24) realize in the sixth trench (2606) that sweeps of sample and are used for valve rod (24) realize in the fourth trench (2604) of appearance of sample that falls in the appearance position.
2. The feeding mechanism as claimed in claim 1, wherein the purging device (2) comprises a sample dropping cone (22) disposed below the sample feeding tray (1), and the sample dropping cone (22) is communicated with the first slot (2601).
3. The feeding mechanism as set forth in claim 2, wherein the sample dropping cone (22) is wide at the top and narrow at the bottom, and the inner wall of the sample dropping cone (22) is tapered from the top to the bottom.
4. The feeding mechanism as claimed in any one of claims 1 to 3, wherein the valve body (23) is provided with a second slot (2602) between the first slot (2601) and the sixth slot (2606) and/or a third slot (2603) between the sixth slot (2606) and the fourth slot (2604) and/or a fifth slot (2605) on a side of the fourth slot (2604) remote from the first slot (2601), wherein the second slot (2602), the third slot (2603) and the fifth slot (2605) are provided with sealing rings.
5. The feeding mechanism as set forth in any one of claims 1 to 3, characterized by comprising a linear slide (25) connected to the valve stem (24) for moving the valve stem (24) linearly in the valve body (23).
6. The feed mechanism as claimed in any one of claims 1 to 3, wherein the valve body (23) is provided with a first vent hole (2101), a second vent hole (2102) and an air intake groove (27) communicating with the sixth groove position (2606) for introducing purge air or combustion gas.
7. The feed mechanism according to any one of claims 1 to 3, wherein the sample holes comprise a plurality of first sample holes (1101) and a plurality of second sample holes (1102) which are staggered, and the first sample holes (1101) and the second sample holes (1102) are respectively positioned on two concentric circles.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732155.XA CN111856055A (en) | 2020-07-27 | 2020-07-27 | Feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010732155.XA CN111856055A (en) | 2020-07-27 | 2020-07-27 | Feeding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111856055A true CN111856055A (en) | 2020-10-30 |
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ID=72947208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010732155.XA Pending CN111856055A (en) | 2020-07-27 | 2020-07-27 | Feeding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111856055A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353632A (en) * | 2021-06-28 | 2021-09-07 | 散裂中子源科学中心 | Automatic sample changing mechanism |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203133096U (en) * | 2013-03-21 | 2013-08-14 | 浙江大学 | Full-automatic liquid sample collecting and feeding system without mixing and dead volume |
| CN110164748A (en) * | 2019-06-21 | 2019-08-23 | 中国科学技术大学 | A kind of sampling device |
-
2020
- 2020-07-27 CN CN202010732155.XA patent/CN111856055A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203133096U (en) * | 2013-03-21 | 2013-08-14 | 浙江大学 | Full-automatic liquid sample collecting and feeding system without mixing and dead volume |
| CN110164748A (en) * | 2019-06-21 | 2019-08-23 | 中国科学技术大学 | A kind of sampling device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113353632A (en) * | 2021-06-28 | 2021-09-07 | 散裂中子源科学中心 | Automatic sample changing mechanism |
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